<template>
  <div class="app-container">
    添加作者
     <el-form label-width="120px">
       <el-form-item label="作者名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="作者排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0"/>
      </el-form-item>
      <el-form-item label="作者称号">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="漫画家"/>
          <el-option :value="2" label="知名作者"/>
        </el-select>
      </el-form-item>
      <el-form-item label="作者荣誉">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="作者简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>

      <!-- 作者头像 -->
<el-form-item label="作者头像">

    <!-- 头衔缩略图 -->
    <pan-thumb :image="String(teacher.avatar)"/>
    <!-- 文件上传按钮 -->
    <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
    </el-button>

    <!--v-show：是否显示上传组件
      :key：类似于id，如果一个页面多个图片上传控件，可以做区分
      :url：后台上传的url地址
      @close：关闭上传组件
      @crop-upload-success：上传成功后的回调 -->
    <image-cropper
      v-show="imagecropperShow"
      :width="300"
      :height="300"
      :key="imagecropperKey"
      :url="VUE_APP_BASE_API+'/eduoss/fileoss'"
      field="file"
      @close="close"
       @crop-upload-success="cropSuccess"/>
    </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'
import teacherAPI from '@/api/teacher'
export default {
  //声明组件
  components: {
    ImageCropper, PanThumb
    },
  data(){
    return{
      teacher:{
        avatar:''
      },
      imagecropperShow:false,
      imagecropperKey:0,
      VUE_APP_BASE_API:process.env.VUE_APP_BASE_API,
      saveBtnDisabled:false
    }
  },
  created(){
    this.init()
  },
  watch:{//路由监听,路由变化时执行
    $$route(to,from){
      this.init()
    }
  },
  methods:{
    init(){//判断路径是否有Id值,若有则获取并根据Id查询
      if (this.$route.params && this.$route.params.id) {
        const id = this.$route.params.id
        this.getInfo(id)
      }else{
        this.teacher={}
      }
    },
    getInfo(id){
      teacherAPI.getById(id)
      .then(response=>{
        this.teacher=response.data.teacher
      })
    },
    saveOrUpdate(){
      this.save()
    },
    save(){
      teacherAPI.add(this.teacher)
        .then(response=>{
        this.$message({
          type: 'success',
          message: '添加成功!'
        });
        // 路由跳转
        this.$router.push({path:'/teacher/list'})
      })
    },
    close(){
      //关闭上传组件框并初始化组件
      this.imagecropperShow=false
      this.imagecropperKey = this.imagecropperKey + 1
    },
    cropSuccess(data){
      this.imagecropperShow=false
      this.teacher.avatar=data.url
      this.imagecropperKey = this.imagecropperKey + 1
    }
  }
}
</script>
